docs: def _is_accepted_input(self, input_string):
          """ vlc input filtering """
          ret = False
          accept_filter = (self.volume_string, "http stream debug: ")
          reject_filter = ()
          for n in accept_filter:
              if n in input_string:
                  ret = True
                  break
          if ret:
              for n in reject_filter:
                  if n in input_string:
                      ret = False
                      break
          return ret